最简单的HTTP客户端,用来演示通过GET或者POST方式访问某个页面

   /**   * 中国银行支付网关---银行回调的接口   * @svncode <a href="svn://10.210.71.10/sinapay_bank/src/java/cn/com/sina">svn://10.210.71.10/sinapay_bank/src/java/cn/com/sina   * @package cn.com.sina.pay.Bank.BOC   * @author yuchao1@staff.sina.com.cn   * @date 20101014   * @access limited by password   * @reference cn.com.sina.pay.ICBC   *    */  import java.io.*;  import java.util.*;  import org.jdom.Document;  import org.jdom.Element;  import org.jdom.Namespace;  import org.jdom.JDOMException;  import org.jdom.input.SAXBuilder;  import org.xml.sax.InputSource;    import org.apache.commons.httpclient.*;  import org.apache.commons.httpclient.methods.*;  import org.apache.commons.httpclient.methods.PostMethod;  import org.apache.commons.httpclient.params.HttpMethodParams;  /**   * 最简单的HTTP客户端,用来演示通过GET或者POST方式访问某个页面   * @author yuchao   */  public class HttpClient1{      public static void main(String[] args) throws IOException      {          String merchantNo = "104110053004253";          String orderNo = "101023416806";          String signData = "SDJFALSF";                     HttpClient client = new HttpClient();                             //使用POST方法              PostMethod postMethod = new PostMethod("<a href="https://ebspay.boc.cn/PGWPortal/QueryOrder.do">https://ebspay.boc.cn/PGWPortal/QueryOrder.do");              /**               * 使用POST方式提交数据               */            NameValuePair[] orderInfo = {new NameValuePair("merchantNo",merchantNo),new NameValuePair("orderNos",orderNo),                    new NameValuePair("signData",signData),};            postMethod.setRequestBody(orderInfo);              client.executeMethod(postMethod);                         int code = postMethod.getStatusCode();              if (code == HttpStatus.SC_OK){              String info = null;              info = new String(postMethod.getResponseBodyAsString());            }                         /**             * 打印服务器返回的状态             */            System.out.println("the post return value"+postMethod.getStatusLine());            /**             * 打印结果页面             */            String response =   new String(postMethod.getResponseBodyAsString().getBytes("UTF-8"));             /**              * 打印返回的信息              */            System.out.println("the getBytes() xml is:"+response);             //打印返回的信息           String resCode = postMethod.getResponseBodyAsString();           System.out.println("the is my other xml:"+resCode);             //释放连接           postMethod.releaseConnection();                                  StringReader read = new StringReader(resCode);       InputSource source = new InputSource(read);       SAXBuilder sb = new SAXBuilder();               try{          Document doc = sb.build(source);          Element root = doc.getRootElement();                     System.out.println("the getName is:"+root.getName());          List jiedian = root.getChildren();          //获得XML中的命名空间（XML中未定义可不写）          Namespace ns = root.getNamespace();          Element et = null;          List orderList = null;                     for (int i=0;i<jiedian.size();i++)          {              et = (Element)jiedian.get(i);                             if(et.getName().equals("header")){                  System.out.println(et.getChild("merchantNo", ns).getText());                  System.out.println(et.getChild("exception", ns).getText());              }                             if(et.getName().equals("body")){                  orderList = et.getChildren();              System.out.println(et.getChild("orderTrans", ns).getChild("orderStatus").getText());              }                         }          for (int i=0;i<orderList.size();i++)          {              et = (Element)orderList.get(i);                             if(et.getName().equals("orderTrans")){                  System.out.println(et.getChild("payTime", ns).getText());                             }                         }          }catch(JDOMException e){              e.printStackTrace();        }catch(IOException e){              e.printStackTrace();          }     }  }